The tt⎯ production cross section (σtt⎯) is measured in proton-proton collisions at √s=7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 fb−1. The measurement is performed in events with two leptons (electrons or muons) in the final state, at least two jets identified as jets originating from b quarks, and the presence of an imbalance in transverse momentum. The measured value of σtt⎯ for a top-quark mass of 172.5 GeV is 161.9±2.5(stat.)+5.1−5.0(syst.)±3.6(lumi.)pb , consistent with the prediction of the standard model
Measurement of the t-tbar production cross section in the dilepton channel in pp collisions at sqrt(s)=7 TeV
TOSI, SILVANO;
2012-01-01
Abstract
The tt⎯ production cross section (σtt⎯) is measured in proton-proton collisions at √s=7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 fb−1. The measurement is performed in events with two leptons (electrons or muons) in the final state, at least two jets identified as jets originating from b quarks, and the presence of an imbalance in transverse momentum. The measured value of σtt⎯ for a top-quark mass of 172.5 GeV is 161.9±2.5(stat.)+5.1−5.0(syst.)±3.6(lumi.)pb , consistent with the prediction of the standard modelFile in questo prodotto:
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